Taxon name
Asaccus margaritae
Carranza, Simó-Riudalbas, Jayasinghe, Wilms & Els, 2016
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Asaccus margaritae
Carranza, Simó-Riudalbas, Jayasinghe, Wilms & Els, 2016
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Reptiles
Species authority
Carranza, Simó-Riudalbas, Jayasinghe, Wilms & Els, 2016
Location and scope
Specific locality or subnational name or regional name
United Arab Emirates (the)
Scope (of the Assessment)
National
Countries included within the scope of the assessment
United Arab Emirates (the)
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Qualifying criteria (if given)
D2
Criteria system used
IUCN
(see Assessment details)
Assessment rationale/justification
Within the United Arab Emirates, the species is currently only known from the Wadi Al Helo area. The species is listed as Vulnerable (VU D2) due to its small area of occupancy (AOO) and extent of occurrence (EOO) of 4 km<sup>2</sup>. This taxon is not a non-breeding visitor, and it is presumed that any immigration from populations outside the UAE is not significant, and therefore there is no adjustment to the Category according to the IUCN regional and national Guidelines (IUCN 2012). Despite occurring at low densities, the population appears stable at present. There are potential threats from infrastructure development, that could significantly impact the population size of the species.The species is new to science with the possibility that more populations may be discovered in similar habitat in the future. The species should be reassessed if new data become available.
Assessment details
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Criteria system used
IUCN
Reference for methods given
IUCN. 2012. IUCN Red List Categories and Criteria: Version 3.1, Second edition. IUCN, Gland, Switzerland and Cambridge, UK. iv + 32pp pp. And IUCN. 2012. Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
Within the United Arab Emirates, the species is known from a single locality, the Wadi Al Helo area from 300-400 m asl (Burriel-Carranza et al. in press). No further records are known in the UAE, but further survey is required.This newly-described species is endemic to the northern Hajar Mountains in Oman and the United Arab Emirates (Carranza et al. 2016). It has only been found in a very few high altitude localities (1,315-“1,434 m asl) in the Musandam Peninsula, Oman (surrounded by A. gardneri at lower elevations) and in two other localities 75 and 120 km further south in Oman and the UAE, respectively, both at relatively low elevations (122 and 374 m asl) (Carranza et al. 2016).
Is there a map available in assessment?
Yes
Habitat and systems
Ecological system type
Habitat
Habitat details as listed in assessment
Strictly nocturnal, this species has been found on the rocky sides of wadis, stony substrates and on larger boulders in the wadi (Carranza et al. 2016). The species breeds throughout the year, with a peak during spring (J. Els pers. comm. 2018). Females lay a single round, hard-shelled egg multiple times during the year (J. Els pers. comm. 2018).
Threats and conservation measures listed
Threats listed in assessment
There are no current threats to the species that might cause significant declines in the near future, however, there is pressure for infrastructure development that could impact the species in the future, especially if accompanied by road developments.
Publication
Els, J., Allen, D., Hilton-Taylor, C., Harding, K. (2019). UAE National Red List of Herpetofauna: Amphibians & Terrestrial Reptiles, Sea Snakes & Marine Turtles. MOCCAE, UAE
